Do-Daga bug?

I've already completed all of Hametsu Village - main and side quests - and decided to take a break from the Cave of Sol to farm Do-Daga... But I can't get into his dojo!!! :x I even checked and I did get the history book in that room so I know I've been in before.

Anyone else having this problem? It's not on the known bugs list so I'm debating if I should send a message KI.

I'm having the same problem in the village of sorrows. i beat the guys in the dojo and my cursor says to go through the right door, but it won't let me in. on the map it shows a path behind the dojo and i think that's where the book "a new beginning" is located since i've looked every where else. :( :?